Finding the Fourth Proportional to 20,883,868.91, 28,819,304.79 and 11,590,893.80
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Solution
The fourth proportional to 20,883,868.91, 28,819,304.79 and 11,590,893.80 is: 15,995,192.39
Step by Step Solution
- Step 1: Write the proportion equation
20,883,868.91 : 28,819,304.79 = 11,590,893.80 : x - Step 2: Convert to fraction form
20,883,868.91/28,819,304.79 = 11,590,893.80/x - Step 3: Cross multiply
20,883,868.91x = 28,819,304.79 × 11,590,893.80 - Step 4: Simplify right side
20,883,868.91x = 334,041,501,050,191.44 - Step 5: Solve for x
x = 334,041,501,050,191.44/20,883,868.91 - Step 6: Final answer
x = 15,995,192.39
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.